In a large cooking pot, like a Dutch Oven, add the olive oil and heat over medium heat.
1 teaspoon Olive Oil
Add the diced onions and cook for about 3-5 minutes, until the onions are translucent.
1 Each Yellow Onions
Add the minced garlic and cook another 2 minutes, until fragrant.
4 Cloves Garlic
Add the turkey, chicken broth, milk, mustard powder and cajun seasoning. Bring to a boil.
½ Pound Leftover Turkey, 2 Cups Chicken Broth, 1 Cup Milk, 1 teaspoon Mustard Powder, 1-½ teaspoons Cajun Seasoning
Add the pasta and give a good stir. Push down on the pasta to make sure it's all covered with the broth. Cover and turn down the heat to a simmer.
2-½ Cups Penne Pasta
Simmer for 10-12 minutes, without lifting the lid.
After 10 minutes is up lift the lid and give a good stir. Check if the pasta is done. Cook a little longer if needed.
Once the pasta has cooked, at least to al dente, mix the cornstarch with a tablespoon of water. Pour into the pasta mixture and stir well.Once totally combined and the pot is bubbling again turn off the heat.
1 Tablespoon Cornstarch
Add the grated cheese to the pot and stir well to combine and melt.
1-½ Cups Sharp White Cheddar Cheese
Notes
I used leftover turkey from Thanksgiving in this recipe, but you could just as easily brown 1lb of ground turkey and use that instead.